more major websocket progress

backend/decky_loader/enums.py

@@ -0,0 +1,10 @@
+from enum import IntEnum
+
+class UserType(IntEnum):
+    HOST_USER = 1
+    EFFECTIVE_USER = 2
+    ROOT = 3
+
+class PluginLoadType(IntEnum):
+    LEGACY_EVAL_IIFE = 0 # legacy, uses legacy serverAPI
+    ESMODULE_V1 = 1 # esmodule loading with modern @decky/backend apis